Experimental investigation of damage evolution and failure criterion on hollow cylindrical samples with different bore diameters

2021 ◽  
pp. 108182
Author(s):  
Jiajun Wang ◽  
Dan Ma ◽  
Zhenhua Li ◽  
Yanli Huang ◽  
Feng Du
Keyword(s):  
Experimental Investigation ◽  
Failure Criterion ◽  
Damage Evolution ◽  
Cylindrical Samples

Experimental investigation on damage evolution in pre-corroded aluminum alloy 7075-T7651 under fatigue loading

2021 ◽  
Vol 799 ◽  
pp. 140206
Author(s):  
Haipeng Song ◽  
Changchun Liu ◽  
Hao Zhang ◽  
Xudong Yang ◽  
Yajun Chen ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Aluminum Alloy ◽  
Damage Evolution ◽  
Fatigue Loading ◽  
Aluminum Alloy 7075

scholarly journals Experimental investigation on the micro damage evolution of chemical corroded limestone subjected to cyclic loads

2018 ◽  
Vol 113 ◽  
pp. 23-32 ◽  
Author(s):  
Hao Li ◽  
Dongmin Yang ◽  
Zuliang Zhong ◽  
Yong Sheng ◽  
Xinrong Liu
Keyword(s):  
Experimental Investigation ◽  
Damage Evolution ◽  
Cyclic Loads

Influence of Load Interaction between Creep and TMF on the Life of Single Crystal Nickel-based Superalloy

2021 ◽  
Vol 1027 ◽  
pp. 99-106
Author(s):  
Zi Yuan Song
Keyword(s):  
Experimental Investigation ◽  
Single Crystal ◽  
Phase Boundary ◽  
Damage Evolution ◽  
Damage Accumulation ◽  
Test Results ◽  
Mechanical Fatigue ◽  
Nickel Based Superalloy ◽  
Life Tests ◽  
Life Predictions

Experimental investigation on the influence of load interaction on the life of Single Crystal Nickel-based Superalloy is conducted. Three kinds of load spectrums considering single and coupled failure mode are designed. Life tests are carried out under creep, thermo-mechanical fatigue (TMF), and creep-TMF interaction loading. The test results show that test lives, under the creep-TMF interaction loading, are lower than the life predictions given by the linear damage accumulation (LDA) rule, indicating that the load coupling can accelerate the damage evolution process. The microstructure of fractured specimens shows that under the creep-TMF interaction loading, rafting cause more dislocations to accumulate in the at γ/γ′ phase boundary, which could be the evidence of life decrease.

Failure in Clay Brick Masonry with Soft Brick under Compression: Experimental Investigation and Numerical Simulation

2017 ◽  
Vol 747 ◽  
pp. 472-479
Author(s):  
G. Pruthvi Raj ◽  
Mehar B. Ravula ◽  
Kolluru V.L. Subramaniam
Keyword(s):  
Experimental Investigation ◽  
Damage Evolution ◽  
Soft Clay ◽  
Compressive Load ◽  
Relative Strength ◽  
Image Correlation ◽  
Compressive Failure ◽  
Confined Compression ◽  
Full Field ◽  
Clay Bricks

An experimental investigation of compressive failure in masonry made of soft clay bricks is presented. The research attempts to address the concern of strong/stiff mortars available in the market today in combination with poor quality burnt clay bricks available in India. Masonry assemblages are tested to evaluate the influence of the relative strength of mortar on the observed damage evolution and compressive failure. Damage evolution associated with the formation and propagation of vertical splitting cracks during the compressive load response of masonry assemblages in the stack bonded arrangement are studied using a full-field optical technique based on digital image correlation. The stress state in the composite material produces tension in the mortar and confined compression in brick. Using image correlation clear evidence of the crack forming in the mortar and propagating into the brick is established. Failure is produced by vertical splitting and the number of cracks depend upon the tensile strength of the mortar relative to the brick and the number of head joints. Head joints act as stress risers, leading to high tensile stress.

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